Statshot: Numbers Guy

Dec 6, 2013 7:30 pm ET

Getty Images

By Carl Bialik

The Wall Street Journal’s Numbers Guy shows how in two-child families, mothers and fathers of girls are more likely to vote Republican; since one-terabyte external hard drives were introduced to consumers eight years ago, their prices have dropped dramatically; and pregnancies for women over the age of 30 have grown by 25%.